“Initial reports from first responders on scene indicate that three to four cars were involved in an accident related to the blast and that the steel vault cover fell onto one car and injured one of the occupants,” the DWP release said.

The manhole cover struck one vehicle and landed on another, the Los Angeles Fire Department stated on Twitter. Three people were taken to a hospital with minor injuries, the Fire Department said.

Three cars were involved in the collision, stated LAFD, which was called to the scene at 1:19 p.m.

CSUN announced that campus power had been restored about 3:20 p.m. and that graduation would go on as planned.